Speed-governing mechanism



sept; 1s, 1923. www3 H. G. sAAL SPEED GovERNING MEcHANIsM Filed March 29. 1920 MI||IIIIIIIH|||||HH d m y mm.: llllllllllllllllllllll;

- /ll mi!! lli Patented Sept. l, 19.23,

HENRY SAAL, OF CHICAGO, ILLINOIS.

l SPELID-GOVIERhTINtr` MECHANISIVI.

Appiication ined March as, 1920. Y seriaim. 369,606.

, i To @ZZ whom t may concern:

Be it known that I, HENRY G. SAAL, citizen ofthe United States,'resioing -at Chicago,'in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Speed-Governing Mechanism, of which 'the following is a full, clear, concise, and exact description.l

My invention relates to speed governing mechanism of the kind verycommoiily employed for controlling the speed of phonograph records. 1 Y Y rEhe inventionhas for one of its objects an improvement in the articulation between an operating' lever and a manually actuated speed gauge.

The invention has for another of its objects the provision of an improved Vmounting for one lever that crosses another'which is connected with a speed govern-ingbrake element ln carrying out theiirstvobject of my invention the operating lever is entered 'into the slot formation ofasleeve which is adjustable to-position this lever. In carrying out the second object of my invention the lever which crosses and is in actuating relation to va cooperating' lever is connected with abracket by means ofa pin thatv has a changeable place of engagement with one of these parts, preferably the lever, to bring such lever nearer to'or further from the bracket. The part Witliwhich the pin has changeable place of engagement is desirably provided with means for clamping the pintle in theselected `adjustment thereof.:

l willeziplain my invention more fully by reference to the accompanying. drawing showingr the preferred embodiment thereof and in which Fig. 1 is a view in elevation',`

partially in section, of enough of a phonograph equipment to illustrate the `nature of.

my invention; Fig. 2 is a perspective view of a part of the structure shown in Fig. l; and Fig'. 3 is a sectional view on line 3-3 of Fig. 2.

Like parts are indicated by similar char-A acters of Vreference throughout the different practice the shaft l is driven by a spring motor through gearing, the gear Wheel 2 being added in order that the shaft 1'V may drive the Worm `3 to rotate the governor. shaft 4 for the purpose of operating the centrifugal governor 5 to maintain the speed ofthe turn table ll substantially constant. This centrifugal governor is of common form, the Weights thereof being mounted uponintermediate portions of the resilient strips 6. Each'of these resilient strips is mounted at one end upon a sleeve 7 rigidly secured to the shaft the other end of said resilient strip being connected with a collar 8 that is movable along the shaft and with respect to the brake element or pad 9. The collar 8 is in fixed relation to the brake disc or rotatable brake element 10 which engages the pad 9 when the governor shaft 'd .reaches a predetermined speed whereby the Vspeed of the .turn table- `shaft 1 is controlledl In the embodiment ofthe invention illustrated the brake pad 9 constitutes the normally stationary brake element, this pad, however, being desirably mounted at one end of one arin of the bell crank 10 which is pivotally mounted at 11 on the frame 12. A spring 13 is received in a recess in the frame 12, the projecting' end of the spring .engaging'the ledge 14 upon the other end of the bell crank 10C This spring operates yieldingly to hold the brake pad in its normally fixed position. A lever 15 is connected With the bell crank, the position of this lever being manually adjusted, by mechanism to be described, Vto fix the position to which the spring` 13 is adapted to normally place the brake pad 9.

.The operating lever 16 crosses Vand engagesthe lever 15. A bracket 17- is mounted upon the base 112. A-pin or pintle 18 brings their-lever 16 into hinged connectionivith the bracket 17,u the lever `16 being` preferably in permanent pivotal connection with said pintle Whose place of engagement with the bracket is changeable longitudinally of the pintle axis 'to bringthe fulcrumed end of the leverY nearer to or further from the` bracket to adjust or calibrate the relation of the levers 15 and 1G. Y

In the preferred embodiment of the invention the pintle is slipped through tivo aligned spaced apart eyes 19, 20. These eyes jare preferably formed with the bracket .fi-oni one piece of strip spring metal, the

eyes being split so as to be contractible and expansible. Parts of these eyes Where-Amargining the split thereof are joined'by a yoke 2l that is penetrated by thesteni` of a clamping screw 22 that is in threaded connectitni with the bracket but not With said yoke. rIhe screw engagesthe yoke so that when the screw is tightened the yoke will be brought closer to the bracket to contractv 'the eyes Vintey clamping engagement With the pintlc to secure thepintle in its adjusted position.-V In adjusting the parts7 the pintle is loose and is permitted to turnyvvhereby the lever 1G is permitted to assume its slant- `As an easy means tor shifting the pintle longitudinally orfits axis, l thread .the same and' Vplace thereon a nut 23 inV threaded en v @agement therewith and Whichis'confined inthe space between the eyes 19, 20.V rEher eyes'coniine the nut to a singlepla'ne et ro`v tation so that the pintle is movedjlongitudii nally of its axis when the nut is turnedand the clamping screw 22 is loosened.` 'Wlieu the desired positionY of the pintle hasbeen selected the clamping screw 22 is tightened tol hold the pintle in fixed relation with the' bracket.

The lever 16, being fulcrumed upon the Y pintle, maybe swung thereon to adjust'the position ,to which the spring lolvinay raiseA thel lever 15 in order to determine the adjusted position of the brake pad 9.- The outer end of the lever 16 passes through thej diametrically opposite Vslots l 24, 25 formed 1n the lower end of the'sleeve 26, The rota- Vtable lshaft 27 is confinedr to a -tiiced'plane of rotation by means of a collar 2b received Within an' annular recess 1n theslialit and between alarger portion ot the shaft and the knurled thumb and linger pie-ce 2!) fixed upon the shaft. The collar 2S may serve as a gauge plate Vand thefknurled thumb and-- finger piece 29 may carry the pointer 30 to indica-te -to the adjuster the speed that may be secured by turning said shaft. 'l`heshait, being thus confined to a single plane vof rotation, is brought into cam engagement `-with the sleeve 26 to force the longitudinal movement ofthe latter up anddoWn to Yelevate or depress the outer end of the lever 1G and' i Vthe pad 9'. Cam" connection betweenVv the thereby further adjust the position to whichV thespring 13 may elevate the lever 1 5 to determine the speed regulating positionot inlay b@ clamped 'upon luiepn.:

shaft 27 and the sleeve 26'desirably resides in' a pin 3l upon the shaft that enters a spiralcani lgroove or slot 32 in the sleeve.

y llhenth'e braeketis adjustable lengthwise thereof as illustrated,l the pin lSlunctions as a pintle to permit modification of the singularity of the bracket and lever 16. 'I

VAdo not limit myself, however, to the pin 18Y .functioning as a pintle.; l

Y lWhile l have herein shown and particnlarly described the preferredA embodiment o1" myinvention l donot ivish'to be limited tothe precise details ofconstruetion shoivnfl as changes may readily be made Without departing* from the spirit otniy invention, but

having thusdescribed my invention I claimfV as new and-desire to `secure by Letters Patent the follovving'z I. Speed ,governing mechanism.including V a driven brake element; another bra-ke ele! nient complementalto the 'aforesaid brake- 2.l Speed :governing nie'chanisrnV ihfjluding tue eyes a driven brake elenientgjanother brakerelement Y` complement al to the aloreslaidfbrake ele-ment;Y mechanism for vcha inge; thepesi; tion of one oi' said elements the other inelusime'V of va'lever connected with,

Vone of said brake elements; an. operating level" crossing"V and engaging the other lever;Y a threaded pin in' connection'vvith said (roer-l ating lever; a bracket in which said j )in'tle may turn @and a'nut assembled with .the bracket and in threaded engagement with the pin. `Y Y A l n `witness whereof, I hereunto subscribeV 1920i Y Y y HENRYV G. SAAlh with .respect to:V

my name this 253th4 day of Marcin jDf 

